Home / Arithmetic Aptitude / Problems on H.C.F and L.C.M :: Discussion

### Discussion :: Problems on H.C.F and L.C.M

1.  What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30 ?
2.  A. 196 B. 630 C. 1260 D. 2520

L.C.M. of 12, 18, 21 30                 2 | 12  -  18  -  21  -  30
= 630.